History offers the opportunity to explore the origins of a topic or problem. Information from Agriculture and Rural Society after the Black Death provides an overview of agrarian issues in agricultural and rural society; during the Middle Ages such issues centered on depopulation and social conflict (Dodds & Britnell, 2008, pp.3-50). The problems of society's economy in the medieval 14th century involved the decline of social status and labor services (Dodds & Britnell, 2008, pp.73-132). Other examples are seen in the change and growth describing that in 1870 the Great Plains had only 127,000 people; six decades later, in 1930, there were 6.8 million people; 74 percent of the population lived in nonmetropolitan areas; from 1930 to 1940 there were losses of 200,000 people; 75% of these counties lost population due to the Great Depression and severe drought, which had caused farms to be abandoned (Kandel & Brown, 2006, p.431). To understand these past experiences, it is necessary to open the door to the issues that hinder change, to determine how agricultural sustainability shapes change. By exploring the past and its threats to human populations, the modern global mythology of sustainable agriculture may begin to narrow in on how and why rural communities may or may not have benefited from agricultural sustainability. By describing the dynamic analysis of livelihoods in developing countries, it is possible to understand the historical changes that have occurred in rural communities. Halberg and Müller stated that globally “the world population was approximately 7 billion in 2010 and is expected to grow much more. Projected growth is highest in areas of the world vulnerable to hunger and adverse climate conditions... middle of paper... small farms make up 90% of the world's agricultural holdings and employ 1.3 billion people . . This dominates agriculture in developing countries because two-thirds of the world's 3 billion rural people live off the income generated by farmers who operate approximately 500 million small farms (Halberg & Müller, 2012, p.21). Furthermore, there are land conservation benefits for local communities involving reduced environmental risks, improved water quality through soil recharge, economic gains from agricultural production resulting from exports, and natural environments that they lead tourism to generate economy (McMahon & Urban, 2010 p. .2). It is only through awareness of this informative view of the differences between community types and their transitions over time that the public can explore and discover economic incentives for rural communities..